Result(s):
Median uterus and ovarian volumes were reduced by 64% (95% CI, 56.6–70.6) and 83.6% (95% CI, 79.6–86.7), respectively, among cases compared with controls. Median UA PI among cases was increased by 30.3% (95% CI, 19.6–40.8) compared with controls. Ovarian follicles were identified in 24 (18.9%) of 127 cases and 25 (39%) of 64 controls. Uterine volume was reduced after TBI (percent reduction 81.9%; 95% CI, 71.8–87.8) or busulfan (percentage reduction 67.4%; 95% CI, 58.5–75.6) compared with those who had not received a conditioning regimen (percentage reduction 24.4%; 95% CI, 7.6–38.2). The only factors independently associated with reduced uterine and ovarian volumes compared with controls were TBI, busulfan, and BMT. The worst effect on UA PI resulted from BMT and a diagnosis of hematologic disease.

Conclusion(s):
Bone marrow transplantation as main treatment and TBI and busulfan as conditioning regimens had the worst effect on uterine and ovarian sizes compared with controls. These data should be considered in counseling families on preserving future fertility in children undergoing BMT.

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